Improvement in valve-inlets for tumbling-boilers



H; BURGESS. Valve-inlets for Tumbling-Boilers.

Patented D ec. 8,1874,

UNITED STA-res PATENT OFFICE.

' HUGH BURGESS, or Ro-YEir's roan, PENNSYLVANIA.

IMPROVEMENT I'N VALVE-lNLTS FOR TUMBLlNG-BOILERS.

Specification forming part of Letters Patent No. 1 57,577, datedDecember 8, 1874; application filed November 9, 1874.

To all whom it may concern:

Be it known that I, HUGH BURGESS, of Royers Ford, Pennsylvania, haveinvented certain new and useful Improvements in Valve- Inlets forTumbling-Boilers; and I do hereby declare the following to be a full,clear, and precise description of the same, reference being had to theaccompanying drawing, which forms part of this specification, and inwhich- Figure 1 is a vertical side section of the inlet-trunnion of theboiler and its appliances; Fig. 2, an end view, from without, of thetrunnion, showing the valve-openings; Fig. 3, an end view, from within,of the induction-pipe head-plate.

Similar letters of reference indicate like parts in all the figures.

My invention consists in a valve-inlet in the trunnion of atumbling-boiler, so constructed as to afford continuous and uniformcommunication with the interior of the boiler, but to direct thatcommunication alternately to each end thereof at every revolution.

For the better information of the public, I will proceed to describe myinvention in detail.

B in Fig. 1 represents a portion of the side of the boiler. T is thetrunnion, which is cast or made hollow, and attached to the boiler byrivets or otherwise, in the usual manner. The trunnions are set uponfriction-rollers R, placed upon ordinary supports The interior of thetrunnion is divided by a partition or diaphragm, d, into two parts. Theouter end or face of the trunnion is provided with two valve-openings,a, b, of quadrant shape, as is shown in Fig. 2, placed opposite eachother, and so arranged that one shall be upon each side of thediaphragm. The trunnion is provided with a rim, l, as shown in Fig. 1.Screwed or fitted into the inner end of the trunnion, and extending intoand within the boiler, is a hollow connection-piece, C, also dividedinto two parts, into which are fitted two pipes, 17 q, extending alongthe interior side of the boiler, and terminating very near to each end.Covering the face .of the trunnion is the induction-pipe head-plate P,rigidly attached exteriorly to the trunnion or boiler. This head-plateis flared out in bell-shaped form, so as to cover the face of thetrunnion,

and is provided with a flange, f. It is held closely against the face ofthe trunnion by the following contrivances: Surrounding the trunnion,back of the rim 1, is an annulus or ring of metal, 8, fitting closely,but free to rotate around the trunnion. Running through this annulus,and also through the flange f of the induction-plate, are bolts d d,which clamp the plate very tightly to the trunnion. To make aperfectly-tight connection for the rotation of the trunnion, packing isinserted in a hollow groove within the bell of the platepiece P, beneaththe flange f, as is indicated by k. The interior of the bell of theplate is divided in half, as shown in Figs. 1 and 3, one half, 0, beinghollowed out, and connecting direct with the pipe 19; the other half,4;, is solid.

From the foregoing description it will be readily understood that assteam or other liquid is forced in the pipe 19, it will be alternatelyadmitted through the valve-openings a and b as the trunnion rotates, inthe one case entering the upper portion of the trunnion, and passingthrough the pipe 19 to the end of the boiler, where that pipeterminates, and in the other passing in. an opposite direction throughthe other portion of the trunnion and through the pipe q.

Now, the arrangement of the induction-plate with regard to the positionof the boiler may be such as to admit the stock through each pipe asthat pipe comes horizontal and is about to descend, or in any otherposition desiredthat is to say, the valves may be so arranged that theentering liquid shall be introduced only at the lower end of the boilerwhen it occupies a perpendicular position, and also as it is revolvinguntil it becomes horizontal,

when it will be discharged from both. ends, al- 4 ternating again to thelower end as the horizontal is departed from.

It will be readily understood that, by reason of the area of thequadrant-valve openings, as referred to, and the area of thesemicircular opening of the induction-plate, the same area of opening isat all positions of the trunnion exposed to the opening of thehead-plate.

I do not confine myself to two openings of quadrant shape, but proposeto use any number of 'openin gs that will produce the required effect;and the openings may also be made as a number of circles in both faceand plate, all situated .on the same circle, and passing over each otheras the rotation proceeds.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent of the United States, is

The valve-inlet above described, consisting of the hollow trunnion T,connecting-piece O, I

and pipes 12 and q, in combination with the induction head-plate P andpipe 10, all'arranged. and operating substantially in the manner and forthe purpose specified.

. HUGH BURGESS.

Witnesses J. BONSALL TAYLOR,

J. QUINN.

